ΔE 7.7, close: similar, with a visible difference side by side. Bloodreaver Flesh is a little lighter, more muted, cooler than Clay Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Bloodreaver Flesh is a little lighter, more muted, cooler than Clay Brown.
The same difference applies the other way round: Clay Brown is a little darker, more saturated, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Clay Brown on the colour wheel See Bloodreaver Flesh on the colour wheel
All matches: Clay Brown equivalents · Bloodreaver Flesh equivalents